//数组的大小只能是13
 1 GetMacAdress(char arr[],int Num){ 2     char MAC[13]={0}; 3     PIP_ADAPTER_INFO pAdapterInfo; 4     PIP_ADAPTER_INFO pAdapter = NULL; 5     DWORD dwRetVal = 0; 6     pAdapterInfo = (IP_ADAPTER_INFO*)malloc(sizeof(IP_ADAPTER_INFO)); 7     ULONG ulOutBufLen = sizeof(IP_ADAPTER_INFO); 8     if(GetAdaptersInfo(pAdapterInfo,&ulOutBufLen) != ERROR_SUCCESS) 9     {10         free(pAdapterInfo);11         pAdapterInfo=(IP_ADAPTER_INFO*)malloc(ulOutBufLen);12 13     }14     if((dwRetVal=GetAdaptersInfo(pAdapterInfo,&ulOutBufLen)) == NO_ERROR)15     {16         pAdapter = pAdapterInfo;17         while(pAdapter)18         {19             if(strstr(pAdapter->Description,"PCI"))20             {21                 sprintf_s(MAC,"%02X%02X%02X%02X%02X%02X",pAdapter->Address[0],pAdapter->Address[1],pAdapter->Address[2],pAdapter->Address[3],pAdapter->Address[4],pAdapter->Address[5]);22                 strcpy_s(arr,Num,MAC);23 24             }25             pAdapter=pAdapter->Next;26         }27     }else{28         strcpy_s(MAC,sizeof(MAC),"NONE");29         strcpy_s(arr,Num,MAC);30     }31 }